The data displays the level of spending on public cloud infrastructure worldwide, both hardware and software, by segment, from 2015 to 2026. In 2017, spending on public cloud Infrastructure as a Service hardware and software is forecast to reach 61 billion USD worldwide. Amazon holds the biggest IaaS market share among vendors, with 27.2% of the market as of the first half of 2015. Infrastructure as a Service generally describes the provision of virtualized storage and servers over the internet. The service provider generally hosts the users' applications, development tools, and operating systems, while conducting maintenance, backup, and resiliency tasks.
